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| author | dougmill@linux.vnet.ibm.com <dougmill@linux.vnet.ibm.com> | 2022-08-16 15:07:13 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-22 07:52:51 -0600 |
| commit | c6ea70604249bc357ce09e9f8e16c29df0fb2fa2 (patch) | |
| tree | 8d8556108b2bb25aec62b08c17f1fd5a125ff11e /block/opal_proto.h | |
| parent | 1c23f9e627a7b412978b4e852793c5e3c3efc555 (diff) | |
| download | linux-stable-c6ea70604249bc357ce09e9f8e16c29df0fb2fa2.tar.gz linux-stable-c6ea70604249bc357ce09e9f8e16c29df0fb2fa2.tar.bz2 linux-stable-c6ea70604249bc357ce09e9f8e16c29df0fb2fa2.zip | |
block: sed-opal: Add ioctl to return device status
Provide a mechanism to retrieve basic status information about
the device, including the "supported" flag indicating whether
SED-OPAL is supported. The information returned is from the various
feature descriptors received during the discovery0 step, and so
this ioctl does nothing more than perform the discovery0 step
and then save the information received. See "struct opal_status"
and OPAL_FL_* bits for the status information currently returned.
This is necessary to be able to check whether a device is OPAL
enabled, set up, locked or unlocked from userspace programs
like systemd-cryptsetup and libcryptsetup. Right now we just
have to assume the user 'knows' or blindly attempt setup/lock/unlock
operations.
Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Scott Bauer <sbauer@plzdonthack.me>
Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Link: https://lore.kernel.org/r/20220816140713.84893-1-luca.boccassi@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/opal_proto.h')
| -rw-r--r-- | block/opal_proto.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/opal_proto.h b/block/opal_proto.h index b486b3ec7dc4..7152aa1f1a49 100644 --- a/block/opal_proto.h +++ b/block/opal_proto.h @@ -39,7 +39,12 @@ enum opal_response_token { #define FIRST_TPER_SESSION_NUM 4096 #define TPER_SYNC_SUPPORTED 0x01 +/* FC_LOCKING features */ +#define LOCKING_SUPPORTED_MASK 0x01 +#define LOCKING_ENABLED_MASK 0x02 +#define LOCKED_MASK 0x04 #define MBR_ENABLED_MASK 0x10 +#define MBR_DONE_MASK 0x20 #define TINY_ATOM_DATA_MASK 0x3F #define TINY_ATOM_SIGNED 0x40 |